Praseodymium vs Lead

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PropertyPr PraseodymiumPb Lead
Atomic number5982
SymbolPrPb
NamePraseodymiumLead
Categorylanthanidepost-transition-metal
Standard Atomic Weight140.90766 u207.2 u
Period66
GroupN/A14
Blocksp
Phase at STPsolidsolid
Electron configuration[Xe]6s24f3[Xe]6s24f145d106p2
Oxidation states[0, 1, 2, 3, 4, 5][-4, -2, -1, 0, 1, 2, 3, 4]
Electronegativity (Pauling)1.132.33
Electron affinity0.962 eV0.364 eV
Density6770 kg/m³1.134200e+4 kg/m³
Melting point930.85 °C327.46 °C
Boiling point3519.85 °C1748.85 °C
Discovery year18852021